Home / 126,884.32-175,021.08-81,621.25

Finding the Fourth Proportional to 126,884.32, 175,021.08 and 81,621.25

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Solution

The fourth proportional to 126,884.32, 175,021.08 and 81,621.25 is: 112,586.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,884.32 : 175,021.08 = 81,621.25 : x
  2. Step 2: Convert to fraction form
    126,884.32/175,021.08 = 81,621.25/x
  3. Step 3: Cross multiply
    126,884.32x = 175,021.08 × 81,621.25
  4. Step 4: Simplify right side
    126,884.32x = 14,285,439,325.95
  5. Step 5: Solve for x
    x = 14,285,439,325.95/126,884.32
  6. Step 6: Final answer
    x = 112,586.33

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.